Crabtree Hot Springs

Lake County County, California · Near Upper Lake
39.2920°N, 122.8210°W
106°F Short Walk Camping nearby (6.1 mi)
Crabtree Hot Springs
Image via Wikidata

Crabtree Hot Springs emerges at 106°F from private property approximately 25 miles north of Upper Lake, remains closed to public access. Located at 2,257 feet elevation, the spring represents a significant thermal feature in Lake County's remote backcountry that continues to intrigue researchers and spring enthusiasts.

The spring flows from terrain characterized by mixed conifer and oak woodlands typical of the region's diverse forest ecosystems. The landscape combines moderate elevation forests with thermal geology, creating a distinctive environment where geothermal heat influences local vegetation and water chemistry.

History of Crabtree Hot Springs

Crabtree Hot Springs occupies private land with restricted access, limiting opportunities for scientific study and public observation. The site reflects the common California pattern where significant thermal features lie on private property, often inaccessible to researchers and the general public.

Public visitation is impossible as the spring lies on private property that prohibits outside access. The nearby Letts Lake Campground, 9.8 kilometers away, offers first-come first-served sites with reservation options. The spring's closed status preserves the fragile ecology of this remote thermal site.

Is Crabtree Hot Springs worth visiting?

Best for

  • Hot spring soaking
  • Overnight camping trips
Crabtree Hot Springs is well suited for hot spring soaking and overnight camping trips.
Monthly Climate
45°
Jan
46°
Feb
47°
Mar
53°
Apr
60°
May
70°
Jun
77°
Jul
76°
Aug
71°
Sep
61°
Oct
50°
Nov
44°
Dec
Annual Precip: 33.4 in Annual Snow: 25.4 in
Best Time to Visit
December Air 44°F · Water 106°F · +62° contrast
January Air 45°F · Water 106°F · +61° contrast
February Air 46°F · Water 106°F · +61° contrast
December offers 33°F more contrast than July
Nearby Camping
Letts Lake Campground 6.1 mi away

Overview This location is available on a first-come, first-served basis only. Visitors are required to physically arrive at the campground to purchase and claim a site.Once on-site, you are able to pay for your campsite(s) by scanning a QR code using the Recreation.gov mobile app, and the Scan and Pay feature.In order to utilize Scan & Pay on site, you will need to first download the free Recreation.gov mobile app https://www.recreation.gov/mobile-app prior to your arrival as some remote area...

Reservable Yes
Reserve on Recreation.gov →
What to Bring
Swimsuit & towel
Water bottle Stay hydrated, especially in hot water
Camping gear Nearby camping at Letts Lake Campground
Trash bag Pack out what you pack in
References
USGS Quad: POTATO HILL 7.5 · PP 492: 48.0 · NOAA: 3.0 · AMS Map: UKIAH
Frequently Asked Questions
What is the water temperature at Crabtree Hot Springs?
Crabtree Hot Springs has a water temperature of 106°F (41°C). This is considered a hot spring, well above body temperature.
Where is Crabtree Hot Springs located?
Crabtree Hot Springs is located in Lake County, California, near Upper Lake. Coordinates: 39.2920°N, 122.8210°W.
How do I get to Crabtree Hot Springs?
Crabtree Hot Springs has Short Walk road access, with the nearest road being Forest Route 17N04(Private Access Only) (0.2 mi from the road).
Can I camp near Crabtree Hot Springs?
Yes, Letts Lake Campground is located nearby (6.1 miles away).
Is it safe to soak at Crabtree Hot Springs?
Crabtree Hot Springs is generally safe for soaking at its recorded temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Crabtree Hot Springs crowded?
Crabtree Hot Springs sees varying levels of visitors depending on the season and day of the week.
What should I bring to Crabtree Hot Springs?
Essentials for Crabtree Hot Springs: swimsuit, towel, water bottle, camping gear, a trash bag to pack out what you pack in.
Temperature
106°F
Warm Hot Boiling
Water Temp 106°F (41°C)
Avg Air Temp 58°F
Above Ambient +48°F
Great soaking conditions March
Access
Road Access Short Walk
Nearest Road Forest Route 17N04(Private Access Only)
Distance to Road 0.2 mi